This article considers bilevel linear programming problems where random fuzzy variables are contained in objective functions and constraints. In order to construct a new optimization criterion under… (More)

This paper proposes a new location problem of competitive facilities, e.g. shops, with uncertainty and vagueness including demands for the facilities in a plane. By representing the demands for… (More)

This paper proposes a new location problem of competitive facilities, e.g. shops and stores, with uncertain demands in the plain. By representing the demands for facilities as random variables, the… (More)

This paper focuses on a new Stackelberg location problem on a tree network with demands whose quantities are given uncertainly and vaguely. By representing their quantities as fuzzy random variables… (More)

Competitive facility location problem has been studied in many literatures, which were dealt with problems considering location of some competitive facilities on at most two-dimensional space. In… (More)

This paper proposes a new location problem of competitive facilities, e.g. shops. In the most studies of competitive facility location, the distance between the facilities and their customers is… (More)